The reasonable use qualification forces an analysis of the land use absorption rate for the proposed use. It would be unreasonable to appraise a 12-story, downtown hotel for conversion to housing for the elderly if the demand for such housing would be insufficient to support a change in use. Because there is a tendency to over zone vacant land for commercial purposes, a retail site appraisal must explain that not only is the zoning suitable, but also that land will be used for this purpose in the reasonable future.